Chapple C1, Ballanger P2, Hatzichristou D3, Liehne J4, van Erps P5, van de Weijer P6, Drogendijk T7, Wright M7, Bolodeoku J7 1. Royal Hallamshire Hospital, UK, 2. Hôpital Pellegrin Tondu, France, 3. Papageorgiou GH, Greece, 4. Ústecke Urocentrum, Czech Republic, 5. AZ Middelheim, Belgium, 6. Gelre Ziekenhuizen, Netherlands;, 7. Yamanouchi